文章基本信息

标题：Study on mixed H2/H∞ output feedback control of maglev actuator for microgravity vibration isolation system:
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作者：Changhao Chen ; Yefa Hu ; Huachun Wu 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2019
卷号：11
期号：2
DOI：10.1177/1687814018819596
语种：English
出版社：Sage Publications Ltd.
摘要：Aiming at how to specify the fundamental trade-off between robust stability and nominal performance of mixed H2/H∞ control as well as lack of experimental studies on vibration control for the maglev actuator in microgravity vibration isolation system, a mixed H2/H∞ output feedback controller based on the linear matrix inequality method is designed and analyzed. This article establishes a state–space realization for a one-dimensional vibration isolation system and the H-norm performance indices are identified and calculated. Furthermore, the curves of threshold values and true values of H∞ and H2 norms are plotted to specify the relationship between the system’s robust stability and nominal performance. Therefore, the threshold value of system’s H∞ norm is identified through repeated simulations, and the state–space realization of optimal controller with minimum H2 norm under the constraints of H∞ norm threshold value is obtained. The vibration control experimental apparatus of one-dimensional control syst...
关键词：Maglev; actuator; dynamic model; mixed H2/H∞ control